肺肉瘤样癌(pulmonary sarcomatoid carcinoma,PSC)是一种分化差的含有肉瘤样成分的非小细胞肺癌[1],临床上非常少见,其影像学特点缺乏特异性。我院经超声引导下细针穿刺活检诊断PSC 1例,现报道如下。1临床资料患者为男性,68岁,主因“左胸疼痛,伴胸闷、憋气1个月”入院。无咳嗽、咯痰、咯血、发热、寒战等症状。吸烟史近50年,平均20~40支/d。查体结果:左肺呼吸音低,右肺呼 Pulmonary sarcomatoid carcinoma (PSC) is a poorly differentiated sarcomatoid-like component of non-small cell lung cancer [1]. It is rare in clinic and has no specific imaging features. Ultrasound-guided fine needle aspiration biopsy in 1 case of PSC, are reported below. 1 Clinical data Patients were male, 68 years old, mainly due to “left chest pain, chest tightness, suffocation 1 month ” admission. No cough, expectoration, hemoptysis, fever, chills and other symptoms. The history of smoking nearly 50 years, an average of 20 to 40 / d. Physical examination results: left lung sounds low, right lung call